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Cleanup baseClone.

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John-David Dalton
2017-04-29 21:48:48 -07:00
parent 67a3fb99ef
commit 5dce119b9f
1 changed files with 9 additions and 14 deletions
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23
.internal/baseClone.js
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@@ -17,9 +17,7 @@ import getAllKeysIn from './getAllKeysIn.js'
import getTag from './getTag.js' import getTag from './getTag.js'
import initCloneObject from './initCloneObject.js' import initCloneObject from './initCloneObject.js'
import isBuffer from '../isBuffer.js' import isBuffer from '../isBuffer.js'
import isMap from '../isMap.js'
import isObject from '../isObject.js' import isObject from '../isObject.js'
import isSet from '../isSet.js'
import keys from '../keys.js' import keys from '../keys.js'
/** Used to compose bitmasks for cloning. */ /** Used to compose bitmasks for cloning. */
@@ -33,8 +31,6 @@ const arrayTag = '[object Array]'
const boolTag = '[object Boolean]' const boolTag = '[object Boolean]'
const dateTag = '[object Date]' const dateTag = '[object Date]'
const errorTag = '[object Error]' const errorTag = '[object Error]'
const funcTag = '[object Function]'
const genTag = '[object GeneratorFunction]'
const mapTag = '[object Map]' const mapTag = '[object Map]'
const numberTag = '[object Number]' const numberTag = '[object Number]'
const objectTag = '[object Object]' const objectTag = '[object Object]'
@@ -69,8 +65,7 @@ cloneableTags[regexpTag] = cloneableTags[setTag] =
cloneableTags[stringTag] = cloneableTags[symbolTag] = cloneableTags[stringTag] = cloneableTags[symbolTag] =
cloneableTags[uint8Tag] = cloneableTags[uint8ClampedTag] = cloneableTags[uint8Tag] = cloneableTags[uint8ClampedTag] =
cloneableTags[uint16Tag] = cloneableTags[uint32Tag] = true cloneableTags[uint16Tag] = cloneableTags[uint32Tag] = true
cloneableTags[errorTag] = cloneableTags[funcTag] = cloneableTags[errorTag] = cloneableTags[weakMapTag] = false
cloneableTags[weakMapTag] = false
/** Used to check objects for own properties. */ /** Used to check objects for own properties. */
const hasOwnProperty = Object.prototype.hasOwnProperty const hasOwnProperty = Object.prototype.hasOwnProperty
@@ -181,7 +176,7 @@ function baseClone(value, bitmask, customizer, key, object, stack) {
} }
} else { } else {
const tag = getTag(value) const tag = getTag(value)
const isFunc = tag == funcTag || tag == genTag const isFunc = typeof value == 'function'
if (isBuffer(value)) { if (isBuffer(value)) {
return cloneBuffer(value, isDeep) return cloneBuffer(value, isDeep)
@@ -194,7 +189,7 @@ function baseClone(value, bitmask, customizer, key, object, stack) {
: copySymbols(value, baseAssign(result, value)) : copySymbols(value, baseAssign(result, value))
} }
} else { } else {
if (!cloneableTags[tag]) { if (isFunc || !cloneableTags[tag]) {
return object ? value : {} return object ? value : {}
} }
result = initCloneByTag(value, tag, isDeep) result = initCloneByTag(value, tag, isDeep)
@@ -208,16 +203,16 @@ function baseClone(value, bitmask, customizer, key, object, stack) {
} }
stack.set(value, result) stack.set(value, result)
if (isSet(value)) { if (tag == mapTag) {
value.forEach(subValue => { value.forEach((subValue, key) => {
result.add(baseClone(subValue, bitmask, customizer, subValue, value, stack)) result.set(key, baseClone(subValue, bitmask, customizer, key, value, stack))
}) })
return result return result
} }
if (isMap(value)) { if (tag == setTag) {
value.forEach((subValue, key) => { value.forEach(subValue => {
result.set(key, baseClone(subValue, bitmask, customizer, key, value, stack)) result.add(baseClone(subValue, bitmask, customizer, subValue, value, stack))
}) })
return result return result
} }